Valve



Patented Aug. 6, 1935 PATENT OFFICE VALVE Ferrell Thomas McNeelan andJimmie L. Garrison, Overton, Tex.

Application April 6,

2 Claims.

The present invention relates to new and useful improvements in valvesfor use particularly in water feed lines to boilers such, for example,as are used in connection with oil well drilling rigs but it will beunderstood, of course, that a valve in accordance with the presentinvention may be used for any purpose for which it may be found adaptedor desirable.

It has been found that when the valve in a boiler feed line is nearlyclosed, as when but a small flow is desired, considerable damage is doneto the valve seat and head, much more so than when the valve issubstantially fully opened, thus rendering premature repairing orreplacement of the valve necessary. To overcome this it has been thepractice to provide a large or main valve in the feed line and constructa by-pass therearound, said by-pass having interposed therein acomparatively small valve of sufiicient capacity to meet the usualrequirements when the main valve is closed.

The primary object of the present invention is to eliminate thenecessity of the aforementioned by-pass and by-pass valve by providing,in a single unit or device, a main or large valve which may be openedwhen desired, together with a second valve of comparatively smallcapacity which may be opened when the main valve is closed to meet theusual requirements.

Another important object of the invention is to provide, in a manner ashereinafter set forth, a valve of the aforementioned character which maybe expeditiously disassembled when necessary to permit the parts thereofto be repaired or renewed.

Other objects of the invention are to provide a valve of the characterdescribed which will be comparatively simple in construction, strong,durable, highly efficient and reliable in operation, compact and whichmay be manufactured at low cost.

All of the foregoing and still further objects and advantages of theinvention will become apparent from a study of the followingspecification, taken in connection with the accompanying drawingswherein like characters of reference designate corresponding partsthroughout the several views, and wherein:-

Figure 1 is a view in end elevation of a valve constructed in accordancewith the present invention.

Figure 2 is a view in side elevation thereof.

Figure 3 is a vertical sectional view, taken substantially on the line3-3 of Figure 1.

Referring now to the drawings in detail, it

1935, Serial No. 15,131

will be seen that the embodiment of the invention which hasbeen'illustrated comprises a body I having a replaceable seat 2 therein.Rising from the body I is an internally threaded neck '3 in which anannulus 4 is threadedly engaged. The end portions of the body I areinternally threaded, as at 5, for connection with the pipes.

Integral supports '6 rise from the annulus 4 and have formed integrallywith the upper ends thereof a ring 1. Journaled in the ring 1 is a 1sleeve 8 having an actuating wheel 9 secured thereon by screws l0. Thering 1 is'provided with an internal flange II and the sleeve 8 isrotatably secured in said ring I through the medium of an externalflange l2 which is provided on said sleeve 8 and which is engaged be--tween said flange II and a retaining ring [3 which is secured by screws[4 on said ring I, as illustrated to advantage in Figure 3 of the draw-1ngs.

A tubular stem I5 is threadedly mounted in the sleeve 8 and extendsslidably through the annulus 4. Threadedly mounted in the lower endportion of the tubular stem I5 is a valve head l6 which is engageablewith the seat 2. The annulus 4 is provided with an internal flange IT atits lower end for supporting a packing l8 which prevents leakage aroundthe tubular stem l8. A gland I9 is provided for the packing l8, saidgland l9 being secured in position by screws 20.

The valve head I6 is provided with a central passage 21 the upper endportion of which is formed to provide a seat 22. The lower portion ofthe tubular stem 15 has formed therein a plurality of ports 23 whichcommunicate with the passage 2| through said tubular valve stem.

Threadedly mounted in the tubular stem I5 is a stem 24 having fixed onits upper end an operating wheel 25. Swivelly mounted on the lower endof the stem 24 is a valve head 26 which is engageable with the seat 22.A packing 21 is provided for preventing leakage around the inner valvestem 24. A ring 28 encircles the stem 24 beneath the packing 21. Thereference numeral 29 designates a packing nut for the packing 21 whichis threaded in the upper end portion of the tubular stem IS. A pair ofcomplemental plates 30 are clamped, as by bolts 3|, on opposite sides ofthe tubular stem I5, said plates being engageable with the supports 6for retaining said tubular stem [5 against rotation.

It is thought that the operation of the invention will be readilyapparent from a consideration of the foregoing. When the head I6 isengaged on the seat 2, the valve 26 may be opened by simply screwing thestem 24 upwardly, thus permitting a flow of water which is usuallysufiicient. However, when a flow of water which exceeds the capacity ofthe passage 2! is desired, it is only necessary to raise the valve headl6 by rotating the sleeve 8, thus elevating the tubular outer stem 55 onwhich said valve head I6 is mounted. From the foregoing it will be seenthat either of the valves may be opened or closed independently of theother.

It is believed that the many advantages of a valve constructed inaccordance with the present invention will be readily understood, andalthough a preferred embodiment of the invention,

is as illustrated and described, it is to be understood that changes inthe details of construction and in the combination and arrangement ofparts may be resorted to which will fall within the scope of theinvention as claimed.

What is claimed is:-

1. A valve of the class described comprising a body, a seat in saidbody, an annulus threadedly mounted on the body, supports extending fromthe annulus, a ring on the supports, a sleeve rotatably mounted in saidring, means for actuating said sleeve, a tubular stem threadedly mountedin the sleeve and extending slidably through the annulus, a valve headmounted on the tubular stem and engageable with the seat, said valvehead having a fluid passage therein, said valve head including a seat atone end of the passage, the tubular stem having ports therein forcornmunication with the passage, a stem threadedly mounted in thefirst-named stem, a valve head swivelly mounted on the second-named stemand engageable with the second-named seat for controlling the passage,means for actuating the second-named stem, and means for retaining thefirst-named stem against rotation.

2. A valve of the class described comprising a body, a seat in saidbody, an annulus threadedly mounted on the body, supports extending fromthe annulus, a ring on the supports, a sleeve rotatably mounted in saidring, means for actuating said sleeve, a tubular stem threadedly mountedin the sleeve and extending slidably through the annulus, a valve headmounted on the tubular stem and engageable with the seat, said valvehead having a fiuid passage therein, said valve head including a seat atone end of the passage, the tubular stem having ports therein forcommunication with the passage, a stem threadedly mounted in thefirst-named stein, a valve head swivelly mounted on the second-namedstem and engageable with the second-named seat for controlling thepassage. means for actuating the second-named stem, and means forretaining the first-named stem against rotation, the lastna-med meanscomprising complemental plates fixed on said first-named stem andslidably engaged with the supports.

FERRELL TI-IOLIAS MCNEELAN. JIMMIE L. GARRISON.

